Skills/PyPI/mcp-openapi-proxy

mcp-openapi-proxy@0.4.0

VERIFIED· not started

Publisher claims: "MCP server for exposing OpenAPI specifications as MCP tools." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher matthew-hand-11550632-matthewhand · publishing for 617 daysInstalls 1,532Last detonated 6d ago
$claude mcp add mcp-openapi-proxy -- uvx mcp-openapi-proxy
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Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
API_AUTH_HEADERAPI_AUTH_TYPEAPI_KEYConfiguration, not credentials: ADDITIONAL_RESOURCES, CAPABILITIES_PROMPTS, CAPABILITIES_RESOURCES, CAPABILITIES_TOOLS, ENABLE_PROMPTS, ENABLE_RESOURCES, ENABLE_TOOLS, EXTRA_HEADERS, IGNORE_SSL_SPEC, IGNORE_SSL_TOOLS, MCP_ALLOWED_HOSTS, MCP_HOST, MCP_PATH, MCP_REQUEST_STATE_KEY, MCP_SERVER_DESCRIPTION, MCP_SERVER_NAME, MCP_SERVER_TITLE, MCP_TRANSPORT, OPENAPI_SERVER_NAME, OPENAPI_SIMPLE_MODE, OPENAPI_SPEC_CACHE_TTL_SECONDS, OPENAPI_SPEC_FORMAT, OPENAPI_SPEC_URL, SERVER_URL_OVERRIDE, STRIP_PARAM, TOOL_NAME_MAX_LENGTH, TOOL_NAME_PREFIX, TOOL_WHITELIST
Where it talks to
no vendor host named in the codeAlso dummy.com, virustotal.com — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names dummy.com, virustotal.com as well as its own vendor. The guard injects API_AUTH_HEADER, API_AUTH_TYPE, API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx mcp-openapi-proxy

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-08 and scored it 90/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

LOW
Collapsed <details> block carrying instructionsREADME.md:326 · Collapsed <details> block carrying instructions · informational: not an instruction file<summary><b>Glama Example</b> — the most minimal config: just <code>OPENAPI_SPEC_URL</code>, no auth</summary> ![image](https://github.com/user-attachments/asseFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Access to sensitive file pathsmcp_openapi_proxy/__init__.py:13 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files# Load environment variables from .env if presentFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
LOW
Collapsed <details> block carrying instructionsREADME.md:828 · Collapsed <details> block carrying instructions · informational: not an instruction file<summary><b>Box API Example</b> — developer-token access to Box content</summary> You can integrate the Box Platform API using your own developer token for authFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01

Cost to the agent

Instructions loaded
≈54 tok
1 file · 21 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for mcp-openapi-proxy@0.4.0 as of 6d ago. This is the package itself, not its dependencies.